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IssuesArchive of Issues2021-5pp.727-736

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Perepelkin V.V., Skorobogatykh I.V., and Myo Zaw Aung, "Dynamic Analysis of the Steady State Oscillations of the Earth's Pole," Mech. Solids. 56 (5), 727-736 (2021)
Year 2021 Volume 56 Number 5 Pages 727-736
DOI 10.3103/S0025654421050162
Title Dynamic Analysis of the Steady State Oscillations of the Earth's Pole
Author(s) Perepelkin V.V. (Moscow Aviation Institute (National Research University), Moscow, 125993 Russia, vadimkin1@yandex.ru)
Skorobogatykh I.V. (Moscow Aviation Institute (National Research University), Moscow, 125993 Russia)
Myo Zaw Aung (Moscow Aviation Institute (National Research University), Moscow, 125993 Russia)
Abstract Within the framework of the model of a viscoelastic Earth, the tidal deformations caused by its motion by inertia around the center of mass are determined. The obtained expressions for the pole tide differ from the generally accepted model in dissipative terms. These terms are determined by the speed of the pole but not by its position. The analysis of the dynamics of the Earth’s pole motion at the Chandler frequency is carried out taking into account the pole tide. It is shown that the optimal approximation of the pole tide parameters according to the generally accepted model does not lead to the optimal approximation of the parameters of the steady state pole oscillation.
Keywords Earth's pole, Chandler oscillation, pole tide, dissipation, geopotential, motion relative to the center of mass
Received 29 December 2020Revised 06 January 2021Accepted 14 January 2021
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